Hoof-parer.



UNITED STATES PATENT FFIE. EDWIN R. LANGFOR-D, OF RENO, NEVADA,ASSICi-INOR OF ONE-HALF TO JAMES 4R.

` MESKIMONS, OF RENO, NEVADA.

HOOF-PARER.

Specification of Letters Patent.

Patented Oct.l 18, 1910.

Application filed January 31, 1910. Serial No. 541,179.

To all whom it may concern:

Be it known that I, EDWIN R. LANGFORD, a citizen of the United States,residing at Reno, in the county of Vashoe and State of Nevada, haveinvented a new and useful Hoof-Parel', of which the following is aspecification.

This invention relates to a device adapted to be used by horse-shoers,farriers, etc., for paring the hoofs of horses, mules, or vother animalsin fitting the shoes.

The object of the present invention is to provide a power operatedcutting device for paring the hoof, by means of whichthe paring may bequickly performed and with utmost precision and accuracy, it beingpossible to regulate the device to vary the depth of cut. In addition tothe rapidity and accuracy of work which may be produced by the device,it may also be operated with greater facility than the paring knife.

Y A further object is to enable the depth of cut to be adjustedwhile thedevice is in operation by a simple pressure of the hand of the operatorupon the regulating device, the regulating mechanism respondingimmediately to produce the proper depth of cut desired. y

A further object is to so construct the device that it may be used tocut the hoof close to the frog of the foot.

@ther objects and advantages vwill be brought out in the followingdescription.

Referring to the drawings: Figure 1 is a longitudinal, sectional viewthrough the device. Fig. 2 is a side elevation of the device on a largerscale. Fig. 3 is a side elevation on a reduced scale showing theflexible shaft attached. Fig. 4 is an elevation of the cutting end ofthe device. Fig. 5 is a plan view of a different form of cutter. Fig. 6is a section on line a'G-mG Fig. 5. Fig. 7 is a front elevation of thedevice.

The instrument comprises a cylindrical barrel 1, on one end of which isscrewed a cap 2. Extending centrally through the barrel 1 is a shaft 3,one end of which is threaded and screwed thereon is a cone 4 and locknut 5. Cone 4 rides on a series of balls 6, which travel in a cup 7which is arranged in the end of the barrel 1, the cap 2 serving to closethe end of the barrel and also house and protect the ball bearing forthe shaft 3. At the other end of the barrel is a cup 7 in which a seriesof balls 8 is seated and it supports a cone 9 rigidly secured on theshaft 3. A sleeve 10 having a flared flange 11 is secured to the shaft 3and rotates therewith, which closes that end of the barrel and protectsthe lower ball bearing.

Secured to the end of the shaft 3 is a rotating cutter 12. This cuttermay be constructed in any preferred form. In Fig. 4, I have shown it asconsisting of a series of closely arranged cutting blades 13 formed inits face and lradiated from the center, the cutting edges of the blades13 being in the same plane, as shown in Fig. 1. The end of the shaft 3is square to receive the cutter and a screw 14 in theend ofthe shaftretains the cutter in position. If desired, the cutter shown in Fig. 5may be employed. In this form the cutter comprises a dished disk 15which is provided with six radial slots 16, the edges of which arebeveled to form cutting edges 17. The material cut from the hoof passesup from the slots 1G, so that the knife is self-clearing. The face ofthe disk is rounded at the edge and is cut back in front of each cuttingedge, so that the outermost edge 18 projects from the periphery of thedisk and is thus effective in cutting, the outermost edge 18 being acontinuation of the cutting edge 17. The same is true of the form ofknife shown in Fig. 4, in which the cutting edge 13' is continued aroundthe edge of the disk.

A bracket 19 extends from the end of the barrel 1 and pivoted to thebracket is a guard ring 20, which, as clearly shown in Fig. 4, encirclesthe knife with ample clearance space between the edges of the knife andthe ring. Formed integrally with the guard ring 2O is a hand lever 21,the latter being forked at 22 where it joins the ring 20, and the ring20 between the two members of the fork 22, as clearly shown in Fig. 4,is beveled to a thin edge at 23 which enables the operator to .cut closeto the frog of the foot. A flat spring v24 is secured to the inner sideof the hand lever 21 and bears against the barrel 1 and serves tonormally hold the hand lever and guard ring in the position shown inFig. 2. A flange 25 is provided on the end of the barrel 1 to guard thehand of the operator and enables the operator to hold the face of thecutter against t-he hoof with sufficient pressure. The hand lever 21 isprovided with a shoulder 26 which strikes the flange 25 while the leveris in its outermost position and thus acts as a stop to prevent theguard ring 20 from being swung any farther than its normal position, asshown in Figs. 1, 2 and 3. A flexible shaft 27 is secured to the upperend of the sha-ft 3.

In operation, as the shaft 3 is rotated, the operator presses the handlever 21 in to retract the guard ring and expose a sufficient amount ofthe rotating cutting knife and presses the rotating cutting knifeagainst the hoof where it is to be pared and as the cutter rotates itpares the hoof. The depth of cut is regulated by the pressure which isapplied to the hand lever 21. Thus if a deep cut is desired, the handlever 21 will be moved close to the barrel 1 which will cause thecutting knife to protrude considerably beyond the guard ring; while, ifbut a shallow cut is desired, the lever 21 will be relaxed and moveddown by the spring 24, so that t-he guard ring will only expose a slightamount of the rotating cutter. The guard ring 2O acts not only toregulate the depth of cut, but also protects the operator, as it guardsthe sharp edge of the rotating cutter. When the guard ring is in normalposition, as shown in Fig. 2, the rotating cutter is completelysurrounded and guarded and the instrument may be set on end resting onthe guard ring or laid on its side without the rotating cutter coming incontact with anything, so that it is not necessary to stop the rotationof the cutter when interrupting work with the device momentarily.

Vhile I have shown two forms of rotary cutters, it should be understoodthat other forms may be employed if desired, and I do not limit myselfto the employment of any specific form of rotary cutter.

What I claim is:

1. A hoof parer comprising a barrel, a bearing at each end of thebarrel, a shaft extending therethrough and rotatable in said bearings, arotating cutter on the lower end of said shaft, a guard ring surroundingthe cutter and normally protecting the same, and means for retractingthe guard ring so that the cutter p'rotrudes from the guard ring.

2. A hoof parer comprising a. barrel, a shaft journaled therein, arevolving cutter mounted on the shaft, a guard ring surrounding thecutter, spring means for normally holding the guard extended to coverand protect the cutter, and means for moving the guard ring relativelyto the cutter to expose the cutter the desired amount.

3. A hoof parer comprising a barrel, a shaft journaled therein, arotating cutter carried by the shaft, a guard ring pivotally mounted onthe barrel and surrounding the cutter, and a hand lever extending fromt-he guard ring along the barrel for adjusting the position of the guardring.

4. A hoof parer comprising a barrel, a shaft journaled therein, arotating cutter carried by the shaft, a guard ring pivotally mounted onthe barrel and surrounding the cutter, and a hand lever extending fromthe guard ring along the barrel for adjusting the position of the guardring, said hand lever having a forked connection with the guard ring,the said guard ring having a peveledv edge between the members of theork.

5. A hoof parer comprising a barrel with a flange at one end, a shaftjournalcd in the barrel and projecting at the upper end of the barreland adapted for the attachment of a iexible shaft thereto` a rotatingcutter detachably connected to the end of the shaft, a bracket extendingfrom the end-of the barrel, a guard ring surrounding the cutter andpivoted to the bracket, a hand lever rigidly secured to the bracket andextending along the barrel, spring means for moving the hand lever andguard ring outwardly, the said hand lever having a shoulder formedthereon and co-acting with said flange as a stop to limit the outwardmovement of the hand lever and guard ring.

In testimony whereof, I have hereunto set my hand at Reno, Nevada, this24th day of January 1910.

EDWIN R. LANGFORD.

In presence of- LYLE F. DURLEY, J. E. MONROE.

